What are you talking about? The bulls are strength 4 with 3 attacks because I have taken extra hand weapons otherwise they have 2 attacks each! There is ONE unit of strength 6 bulls with a whopping 2 attacks each. Lol the units are small as they are only 6 per unit.
The flying sorcerer Lord on a bull is a total cannon target, the bull has no save outside of non magical attacks must re roll to wound, Trust me he's no where near survivable as you think, in fact I give The Lord stubborn because I have to put him into combat right away because cannons and magic missiles bring him down very quickly when I do play him, let alone magical wood elf poison shooting.
The kadaii is definitely a sore spot with people and I would take him out in his place I would likely use a train or 6 kadaii fireborn.
Your blanket statement about the chaos dwarves shows you don't have much experience with them. There are 3 under costed things in the army.... Magma cannons, death shrieker rockets and to some extent the Destroyer.